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Finding the Fourth Proportional to 425,377.08, 587,061.74 and 317,760.28

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Solution

The fourth proportional to 425,377.08, 587,061.74 and 317,760.28 is: 438,540.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,377.08 : 587,061.74 = 317,760.28 : x
  2. Step 2: Convert to fraction form
    425,377.08/587,061.74 = 317,760.28/x
  3. Step 3: Cross multiply
    425,377.08x = 587,061.74 × 317,760.28
  4. Step 4: Simplify right side
    425,377.08x = 186,544,902,206.43
  5. Step 5: Solve for x
    x = 186,544,902,206.43/425,377.08
  6. Step 6: Final answer
    x = 438,540.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.